SpudFiles

well on real guns the barrel is on top. in a coaxial its in the middle. can't you mount the barrel to the pipe wall so it looks more realistic( for a bb gun). there is probably some major flaw but i can't seam to find it. you would just maby need to put sone kind of spacer between the barrel and pipe wall so the face can seal better but that's all i see.

please point out why this would/wouldn't work

The only trouble i can see is that the pressure would not be placed in the centre of the piston, maybe leading to leaks or a piston jam. The piston would be sitting at an angle when pressurised, this would work if the clearance around the piston was kept to a minimum and the sealing face soft enough.

ya thats the problem i was thinking of but a long tight fiting piston should work, right? has any1 done this before? plz post links if you find any.

I agree with Nova here, an off-centre barrel will jam your piston.

well on real guns the barrel is on top. in a coaxial its in the middle.

Not always true:





see, co-axials

interesting. i've never seen something like that before. i was refering to my pellet gun btw. if you put 3 more stoper things like in the pic. won't it fix the jamins problem?

Assuming the stoppers were fixed securely and well aligned, then it should avoid jams.

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it sertantly would be different and i've thought about it but i dont have enough brake line to make it. i've decided to go with a ball valve and not a blow gun but is a 1/4 better than a blowgun or do i need a 1/2?